Cutting mechanism



2 Sheets-Sheet 1 F. RENZ CUTTING MECHANISM Filed Nov. 28, 1927 inn-u...

July 24, 1928.

HEJVENTOR ATTQRNEY July 24, 19221 v 1,678,080

F. RENZ CUTTING MECHANIS M Filed Nov. 28, 1927 2 Sheets-Sheet 2 IIHHII I ll] INVENTOR, rc'demck lfcnz ATTORNEY Patented July 24, 1928.

UNITED STATES PATENT OFFICE.

FREDERICK BENZ, OF BROOKLYN, NEW YORK.

CUTTING MECHANISM.

Original application filed February 16, 1927. Serial No. 168,753. Divided and this application 'flled November 28 1927.

This invention relates tocutting mechanism for use in connection with blank book making machines such as is shown and described in an application filed by me Feb.

16, 1927, Serial No. 168,7 53, blank book making machines, the present application being a division thereof. g

A principal object of the invention being to provide accurate, timed automatically controlled mechanism for'cutting the usual pre-applied binding tape or strip together with the usual sewing threads connecting the unfinished spaced book units in the passage or feeding movement thereof through the machine to reduce to aminimum the shocks or vibration to the frame of the machine due to such cuttingoperation.

A further object of the present invention being to obviate some ofthe objections which are present in patented devices designed for a like purpose. i

A primary feature of the construction herein shown and described. is the provision of a horizontally arranged reciprocatory 25 cutter device and means for imparting there to a rising cross movementrelative to the path of travel of the line of temporarily connected work or book units throughthe machine to sever the connecting tape and sewing threads at the proper time with little or no attending vibration to the frame structurer The invention possesses other advantageous features which will be set forth in the following detailed description.

The arrangement of the parts may be varied considerably but the present emb odi mentillustrates the invention now thought to be the best form, but it will be understood thatmany refinements may be made in the commercial application of the mechanism provided for the purpose set forth. i

I clearly illustrate my invention in the accompanying drawings which form apart of this specificatiomandin which similar referonce characters are employed to designate corresponding parts throughout the several views, in which:

Fig. 1- is a crosssectional elevation of the book makinginachine shown and described in the parentapplication above identified and showing. the normalrelative positions of the cutter mechanism parts with respect Serial No. 236,233.

to the pre-taped and sewed book units in their travelthrough the machine.

Fig. 2 is a partial horizontal sectional plan view about on the line 2-2 of Fig. 1.

Fig. 3 is a perspective View of parts of the cutter controlling mechanism.

Fig. 4 is a partial horizontal plan sectional view taken'ab'out on the line 1% of Fig. 1. j

Fig. 5 is a partial'sectional side elevation about on the line 5-5 of Fig. 1.

Fig. 6 is a detail side view of the cutter and its operating element.

To clearly illustrate my present invention, I have shown in Fig. 1 of the drawings a framework 10 such as is employed to support certain parts in'the parent application above identified; This framework is pref erably formed of side posts 11 and a connecting cross bar 12 from which parallel bearings13 are suspended to support a part 14 of the book unit feeding mechanism. The other co-acting part 15 of the. said feeding mechanism may be mountedon a cross shaft 16 which may be driven from a suitable source of power, preferably by the means employed in the co-pending application above mentioned.

Extending between and supported by the 7 main rails 17 of the machine is a bar, table orplatform 18 on which parts of the cutting .mechanism are mounted, which mechanism may be described" as follows:

A cutter 19 is pivotally connected at one end to an operating disk 20. its other or free .end being forked, providing aslot 21 in which a fixed pin 22 is received. The slot extends inwardly from the end of the cutter pin 22 to lift or raise the free end of the cutter as it is drawn across the line of travel of the tapeconnected book units when severing the said tape connection between the said units at the proper time in their travel through the machine.

The above mentioned severingor cutting operation must be accurately timed and quickly executed as the connected book units are moved rapidly through the machine.

I accomplish the above results automatt cally by employing a novel tripping mesh anisin, controlled by contact with the pass ing book units and a single revolution clutch controlled by the said tripping mechanism which I will now proceed to describe.

A bracket is bolted to an extension of the cross bar 12 of the franfelt), and is" formed with an inwardly directed .arm .26,

a depending arm 27. and side extensions 28 and29. Thc-endofthe a rm .26 is formed with a vertical bearing 30 to receive a shaft 31 carrying a feeler or finger ,32, and attached to the shaft 31 at itstopandabove the arm 26 isa lever arm-38 whose hub rests on the said arrnf26. I

The feeler finger 52 'keyedto the shaft 31 extends through an opening iA-ina sheet metal side guide 35 as shown in Fig. 4 0i the drawings, and urged against one side of the book units as tl-"lQY'IHOVG by through the instruinentality of a pull spring 36 connected at one end to thelever arm 33and anchored tothe guide 85 at its other end as shown in Fig. 2 of the drawings.

Under the pull of thesaid spring 36 the feeler linger 32 will ride otl the rear ends of the passing book units and will snap in wardly against a properly positioned stop and guide plate 37 mounted on the lower end of a vertical shaft 38 supported at the top from the-cross bar 12 of the frame 1.0.

Theabove mentioned movement of the finger 32 caused by the pull of the spring 36 partiallyturns theshaft 31thus causing the lever I1l)1- 33 to draw a connected link 39 with it This link is loosely connected to a hook portion 40 of a rockable tripper 41 which is thus tilted .upwardonits piv'ot42, that is,- the free end thereof is raised, and since said free end or nose 43, normally lies under thext'ree end ofa trip arm 44L it will raise it a short distance on its pivot pin 45 and release a clutch controllingthe movement of the cuttei-1 9 andcause .it to sever the before describedbindingflstrip as'will later appear. I

The trip arm 44 is made in two parts connected by an. elbow joint 46 which breaks outwardly, the partsbe'in'g held in alignment bya leaf spring 47. y l e .In the automaticoperation of quickly rescttingthe parts of thetripping,inechanisin,

the next oncoming book unit- .ofthe line, strikesandforces. out the finger 32 from its' inward tripped position, which movement partially turns the shaft 31 in the opposite direction, orto theright when viewed from above and forces the lever arm 33 also to the right,. thus pushing the link anal se in that direction and forcing the nose 43 of the rock-able trippcr to slightly breakthe elbow joint of the trip arm tlpermitting said nose tomove down under said trip arinto its normal position as best shown in F-ig. 3 of the drawings.

Briefly, the free end of'the triparin 44 normally lies in the swinging path of the rockable tripper 41 which forces it, outwardly in" its downward re-setting movement, but.

said free end snaps back over the nose of the rockable tripper when the parts are in the re-"s'tposit iona-nd';of course, at the passingof another book unit the above opera 'tions are repeated.

In carrying out my invention, I provide the trip arni l l with a shoulder 48 against which tlie free end or nose of a shift lever 49 is urged. by a pull spring 50 which is attached at .one end to a tail piece .51 of the said lever and at its other end to the exstandard 56 and has its lower end pin, connected to ,a slide bar 457 operating in guides 58; i i I ,The slide. bar .57 is turned up at its free .end to provide a bearing for a roller 59 and the slide bar also carries a' verticallstop pin 60' which normally underlies a'proje'cting pin 61. on a cam sleeve art 62 of a cutter cont 'tollin-gcl'utch y v t The single revolution clutchC 'is of well ki'iown construction, being shown and. de-

scribed in detail in my above referred to cdpendin'gapplication, and also in a patent grantedto Joseph 'P. Renz, Feb. 1, 1921', No. 1,366,938, c'ount e1i.and stacker forsheet mat eria'land is operated when the stop pin 60 is withdrawn'froin under theprojecting pin 61 by aponstanfl driven sprocket carrying 'sl'ecve fi'3 toimpart a full rotation. to its shaftfii, and, through 'gears65 the disk 20 to' which the cut'ter 19 is pivotally attached.

The slide bar 57 may have a spring com neetion 66 to normally draw toward the clutch to 1mi min the pins 60', 61 in locked engagement to preventt'he clutch from men-- 1ng. i

'cla m' i g In a maehme for feedlng a continuous flifi'ibf tape! connected. spaced books, Ineans controlled by the movement of said books for severing the said tape connection be tween them, consisting of a nornially horizontal knife having a tail slot, apin entering said slot. to support and guide the rear nd )fthe knifeand' mechanism for oper- 2 In a machine for feeding continuous line of spaced tape connected books, the combination with a rotar single revolution otal connection with a part driven by said ating saicl knife mess the path of the said [bee-ks and between the same. i

pivoted clutch and mechanism, controlled by the passing books for releasing the clutch to draw the knife across the line of movement of the line of books for the purpose described.

3. Ina machine for feeding a continuous line of spaced tape connected books, the combination with a rotary single turn clutch, a rotarymember geared to said clutch, knife to said member and having acam slot at its free end, a fixedpinentering said slot, a feeler finger adapted to bear on the passing books, a shaft to support said finger and connections for releasing said clutch to operate the knife as each book passes.

4. In a machine for feedinga continuous line of spaced tape connected books, the combination with a single, turn clutch, of a rotary member geared thereto, a knife pivotally connected to said member, and having a cam slot at its free end, a fixed pin enterin of said sliaft'and a lever arm on the other, means attached to said lever arm for urging said finger into yielding contact with the passing books, and connections for releasing said clutch to operate the knife as each book passes. l,

- ,5. Ina machine for feeding a continuous line of spaced tape connected books, the combination with a single turn clutch, of. arotary member geared thereto, a. reciprocatory cutter'connected to said member, said cutter being provided with or said slot, a shaft, a finger on one endan angular slot at its free end, afixed pin engaging said slot to support and raise said end in the cutting operation, a vertically arranged rock shaft, a feeler finger and a lever arm on said shaft, a stop and guide plate arranged back of said to said member and havmg a cam slot at its 'free end means en a in said slotfor su g a e: a a porting and raising said end in the cutting operation, a shaft, a feeler finger and a lever arm thereon, an anchored spring having its free end connected to said lever arm, a rockable tripper having a hook and a nose, a link pivoted to the lever arm and engaging said hook, a two part pivoted trip arm normally above the nose of said tripper, said trip arm having a stop shoulder, a spring urged shift lever normally engaging said shoulder, a slide bar having a pin to engage a pin on said clutch, and connections between the shift lever and the slide bar for disengaging said pins to release the clutch and operate the cutter as each book passes.

In testimony whereof, I have signed my name tothis specificationthis 14th day of November, 1927.

FREDERICK BENZ.

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